diff --git a/src/gl/dynlights/gl_glow.cpp b/src/gl/dynlights/gl_glow.cpp
index aaf3930e6..2e324b63e 100644
--- a/src/gl/dynlights/gl_glow.cpp
+++ b/src/gl/dynlights/gl_glow.cpp
@@ -125,7 +125,7 @@ int gl_CheckSpriteGlow(sector_t *sector, int lightlevel, const DVector3 &pos)
 			}
 		}
 	}
-	else if (uint32(-1) != c)
+	else if (c != ~0u)
 	{
 		bottomglowcolor[0] = c.r / 255.f;
 		bottomglowcolor[1] = c.g / 255.f;
@@ -171,7 +171,7 @@ bool gl_GetWallGlow(sector_t *sector, float *topglowcolor, float *bottomglowcolo
 			}
 		}
 	}
-	else if (uint32(-1) != c)
+	else if (c != ~0u)
 	{
 		topglowcolor[0] = c.r / 255.f;
 		topglowcolor[1] = c.g / 255.f;
@@ -195,7 +195,7 @@ bool gl_GetWallGlow(sector_t *sector, float *topglowcolor, float *bottomglowcolo
 			}
 		}
 	}
-	else if (uint32(-1) != c)
+	else if (c != ~0u)
 	{
 		bottomglowcolor[0] = c.r / 255.f;
 		bottomglowcolor[1] = c.g / 255.f;
diff --git a/src/p_udmf.cpp b/src/p_udmf.cpp
index 9f920d225..1650a33b7 100644
--- a/src/p_udmf.cpp
+++ b/src/p_udmf.cpp
@@ -1695,7 +1695,7 @@ public:
 			sec->ceilingplane.set(n.X, n.Y, n.Z, cp[3]);
 		}
 
-		if (lightcolor == uint32(-1) && fadecolor == uint32(-1) && desaturation == -1 && fogdensity == -1)
+		if (lightcolor == ~0u && fadecolor == ~0u && desaturation == -1 && fogdensity == -1)
 		{
 			// [RH] Sectors default to white light with the default fade.
 			//		If they are outside (have a sky ceiling), they use the outside fog.
@@ -1714,8 +1714,8 @@ public:
 		}
 		else
 		{
-			if (uint32(-1) == lightcolor) lightcolor = PalEntry(255,255,255);
-			if (uint32(-1) == fadecolor)
+			if (lightcolor == ~0u) lightcolor = PalEntry(255,255,255);
+			if (fadecolor == ~0u)
 			{
 				if (level.outsidefog != 0xff000000 && (sec->GetTexture(sector_t::ceiling) == skyflatnum || (sec->special & 0xff) == Sector_Outside))
 					fadecolor = level.outsidefog;